Submission #705852

#	Time	Username	Problem	Language	Result	Execution time	Memory
705852		Muaath_5	Coins (IOI17_coins)	C++17	100 / 100	9 ms	1872 KiB

coins

#include <vector>
using std::vector;

std::vector<int> coin_flips(std::vector<int> b, int c) {
    std::vector<int> v;
    int xr = c;
    for (int i = 0; i < 64; i++) {
        xr ^= (b[i] * i);
    }
    v.push_back(xr);
    return v;
}

int find_coin(std::vector<int> b) {
    int c = 0;
    for (int i = 0; i < 64; i++) {
        c ^= (b[i] * i);
    }
    return c;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 15 / 15
• Subtask 5: 50 / 50